We will be releasing a title update. Our goal is to get it submitted sometime early next week. Once thats been done, it will take a few weeks to get through certification via the folks at Microsoft.
Ill be updating this as I get more information, but heres an overview of the issues that were looking at right now, as well as status and workarounds where available:
Shared Stash items missing - This issue will be resolved in the next title update.

Cause: Stash file gets overwritten when creating a new character. Workaround: Load an existing character before making a new one.
Shared Stash only holds 42 items - This issue will be resolved in the next title update.

Cause: Stash size incorrectly set. Workaround: None available.
Avatar t-shirt clipping issue - This issue was patched in our first title update which went out at release, but some users have still been noticing a problem, so this is currently under investigation.

Cause: Unknown. Workaround: None available.
Chakawary HP Bug - This issue will be resolved in the next title update.

Cause: Minor glitch. Workaround: None available.
Recovering a gem causes crash - This issue will be resolved in the next title update.

Cause: Item was in pet inventory when trying to recover. Workaround: Move item to character inventory before attempting to recover.
Summoner alchemist interaction issue - This issue will be resolved in the next title update.
Performance issues - We've added some particle and collision optimizations; hopefully, this will resolve some of the issues you're seeing. This will be addressed in the next title update.
Pet transformations time out in title menu - This issue doesnt affect gameplay and likely wont be addressed.

Cause: Timer continues to countdown in title menu. Workaround: None required, as the timer reverts to its previous state upon loading the save.
Chapter segment voiceovers may be intermittently inaudible - This issue is under investigation.
Unable to proceed in the Lost Fortress, Level 27 - This issue will be resolved in the next title update.
Workaround: None available.
Stuck Characters - We anticipated this issue ahead of time, so theres an easy fix. Just hold both bumpers on your controller as you load your game save and you should be sent to the beginning of the floor.
Please let us know if you find anything else that seems like it might be a bug. If you can provide some steps to help us reproduce the issue, that would be helpful. The best way to contact us is via the forums here on the XBLA Help and Support board or via email at customerservice@runicgames.com. Thank you!